Function hasObjCCategoryInModule

src/lib/Bitcode/Reader/BitcodeReader.cpp:239–278

}

static Expected<bool> hasObjCCategoryInModule(BitstreamCursor &Stream) {
  if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
    return error("Invalid record");

  SmallVector<uint64_t, 64> Record;
  // Read all the records for this module.

  while (true) {
    BitstreamEntry Entry = Stream.advanceSkippingSubblocks();

    switch (Entry.Kind) {
    case BitstreamEntry::SubBlock: // Handled for us already.
    case BitstreamEntry::Error:
      return error("Malformed block");
    case BitstreamEntry::EndBlock:
      return false;
    case BitstreamEntry::Record:
      // The interesting case.
      break;
    }

    // Read a record.
    switch (Stream.readRecord(Entry.ID, Record)) {
    default:
      break; // Default behavior, ignore unknown content.
    case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N]
      std::string S;
      if (convertToString(Record, 0, S))
        return error("Invalid record");
      // Check for the i386 and other (x86_64, ARM) conventions
      if (S.find("__DATA,__objc_catlist") != std::string::npos ||
          S.find("__OBJC,__category") != std::string::npos)
        return true;
      break;
    }
    }
    Record.clear();
  }
  llvm_unreachable("Exit infinite loop");
}

static Expected<bool> hasObjCCategory(BitstreamCursor &Stream) {
  // We expect a number of well-defined blocks, though we don't necessarily